Sioux County property record for 810 3rd Ave, Alton, IA 51003
| Property Type | Single Family Home |
|---|---|
| Details | 6 ba · 2,620 sqft · built 1965 |
| Lot Size | 2.4 acres (104,413 sqft) |
| Owner | Individual Name on File |
| Flood Zone | Zone X (minimal risk) |
| APN | 23-02-376-001 |
| Primary APN | 23-02-376-001 |
|---|
| Full Baths | 6 Baths |
|---|---|
| Half Baths | 4 Half Baths |
| Total Rooms | 10 Rooms |
| Stories | 2 Stories |
| Building Area | 2,620 sqft Living Area |
| 1st Floor Area | 1,246 sqft |
| Basement Area | 1,374 sqft |
| Finished Basement | 1,200 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1965 |
|---|---|
| Exterior Material | Metal |
| Construction Type | Steel Frame |
| Foundation Type | Block |
| Roof Type | Gable |
| Roof Material | Asphalt |
| Lot Area | 104,413 sqft (2.4 acres) |
| Garage Type | Attached |
| Garage Area | 846 sqft |
| Parking Spaces | 3 Parking Spaces |
| Porch | Open Porch |
|---|---|
| Porch Area | 128 sqft |
| Patio Area | 649 sqft |
| Total Buildings | 2 Buildings |
| Cooling System | HVAC |
|---|---|
| Heating System | Forced Air |
| Heating Fuel | Gas |
| Street Address | 810 3RD AVE |
|---|---|
| City | ALTON |
| State | IA |
| Zip | 51003-8582 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LS1-15 & VC ALYS BLK 12 ORIGINAL |
| Legal Subdivision | ORIGINAL ALTON |
| Legal Block | 12 |
| Jurisdiction | SIOUX IA |
| Township / Civil Division | NASSAU |
| Census Block Group | 3 |
| Census Block | 3054 |
| Census Tract | 70500 |
810 3rd Ave, a single family home, is owned by an individual.
Source: Sioux County records, as of October 8, 2025
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | PO BOX L, ALTON, IA 51003-0802 |
| Owner Type | Individual |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | Name on Deed |
|---|---|
| Record Updated | Jun 8, 2026 |
Source: Sioux County assessment roll, as of May 1, 2025
| Type | Name |
|---|---|
| State | Iowa |
| Municipality | Alton City |
| County | Sioux County |
| Unified School District | MOC-Floyd Valley Community School District (PK - 12) |
| Year | Assessed Value | Assessed Market Value |
|---|---|---|
| 2025 | $2,062,650 Land $59,930 Building $2,002,720 | $2,062,650 Land $59,930 Building $2,002,720 |
| 2023 | $1,875,030 | $1,875,030 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 810 3rd Ave in Zone X, an area of minimal flood risk, though there have been 3 flood claims nearby since 2024.
Source: FEMA National Flood Hazard Layer, effective August 1, 2022 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 2 in force |
| Nearby Flood Claims | 3 (2024) |
| Claims Outside the SFHA | 1 of 3 |
| Most Recent Claim | Jun 2024 · Severe Storms, Flooding, Straight-line Winds, And Tornadoes |
| Claims by Event |
|
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
The area around 810 3rd Ave has no burnable land within ember reach, so its wildfire risk is not rated.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within ember reach |
|---|
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | ALTON MUNICIPAL WATER DEPARTMENT serves 1,248 people · EPA ID IA8403029 |
|---|---|
| Water Source | Purchased groundwater from ORANGE CITY MUNICIPAL WATER DEPARTMENT |
| Last State Inspection | Dec 2025 |
| Lead | Under 1 ppb (2022–2024) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | None last 3 years |
Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes. The service area is an EPA estimate; the actual supplier may differ.
Source: FCC Broadband Data Collection, based on 231 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Westel Systems Fiber | 1,000 / 1,000 |
May also be available: AT&T, Nextlink, Verizon.
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